Hoping someone can point me to the right thread on this as I'm up
against the clock here.

W126
Key will turn in ignition but will not engage anything electrical.
I can pull the key out when it is in the on position.

Can I jump this to get it home?

Obviously, I need a new tumbler & key.

And we were going to Charlie's tomorrow to show off the
car & hang out

Jeff

__________________
1984 300SD 300,000 miles--two tank WVO setup
2.88 diff & 500SEL anti-squat rear end

OK found a place in town that has the tumbler for sale
Now if someone can point me to the right thread on replacing it
I can forget calling a tow truck.

Looks like I'll be here at work late!

Jeff

__________________
1984 300SD 300,000 miles--two tank WVO setup
2.88 diff & 500SEL anti-squat rear end

Here's the link to multiple threads about removing the tumbler.

http://www.peachparts.com/shopforum/diesel-discussion/142232-ignition-cylinder-tumbler-replacement%3B-mixed-diesel-gas.html#post1065596

__________________
Joe

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1980 300SD - 495k miles - 'The Ambassador'
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Former Family Members
95 C280
73 280SEL
90 300D
87 300SDL (X2)
86 560SEL
84 300D
80 300SD

The After Market Lock Tumblers do not hold up well.

Of other lock and ignition switch issues (ya like in My case the innards of the Steering Colum Lock broke and it would not turn the Ignintion Switch).

If it turns out the Steering Colum Lock is not turning the Ignition Switch if yours is like My 84 300d you will not be able to remove even the Ignition Switch Electrical Connector to get at the Screws that Hold in the Ignition Switch so that you can get the Steering Colum Lock off. I think it is an anti-theft feature.

Repair Links
DIY Links by Parts Category - PeachParts Mercedes ShopForum

PeachPartsWiki: Do It Yourself Articles - Mercedes Vehicles

Personally I would take a look at what is wrong first before deciding what to buy.

__________________
84 300D, 82 Volvo 244Gl Diesel

Where to connect jumper wires is supposed to be under the Battery Tray on an older SD.

Attached Thumbnails

 

__________________
84 300D, 82 Volvo 244Gl Diesel

Got the tumbler out and new one in, but somethings wrong.
When I move the key to the crank position it doesn't spring back
to first position. Also, when I engage the key no electronics are activated???

Not sure if the two inside tumbler studs are seating correctly.

Still at work
Jeff

__________________
1984 300SD 300,000 miles--two tank WVO setup
2.88 diff & 500SEL anti-squat rear end

Unfortunately this is because you didn't have a tumbler failure, you had an ignition switch failure. The switch crumbles inside and the clue here is the loss of detents in the 2 positions and the spring back from the start position.

__________________
'84 190D 2.2 5MT (Red/Palomino) Current car. Love it!
'85 190D 2.2 Auto *Cali* (Blue/Blue) *sold*
http://badges.fuelly.com/images/sig-us/302601.png
http://i959.photobucket.com/albums/a...0/sideview.png

Jeff I think it is in the Ignition Switch on the rear of the Lock assy. I have one I have been playing with.

Remove the Tumbler, and inside there are the 2 indentations the Tumbler pins fit into. and on the left side is the springy tongue. Push it in with a screw driver and turn the assembly to the right like you would do with a Key. See if that turns the electrical on and or start the Engine.

Edit:
Manny you beat me to it.

I have another assy w/o the Ign Switch, and there is no springy to it.

I think you broke your main spring, you wound her too tight.

Doesn`t do you any good since you are 150 miles away, but I have a used one that seems to be good.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Actually the Spring is in the Steering Colum Lock.
When you turn the Tumbler ends fit into a sort of Cam Lobe. The Cam operates inside of Metal Frame that has the Steering Colum Lock Plunger on one ends a Spring on the other.
The Spring is what you feel with the Key Springs back.
See post #25
http://www.peachparts.com/shopforum/diesel-discussion/341580-tumbler-problem-key-broke%3B-turns-freely.html

Please note that those are pictures of My own busted Steering Colum Lock Parts. I thought that I had a bad Lock Tumbler also.
I replaced the whole Steering Colum Lock Assembly (Steering Colum Lock Assembly comes with a New Vacuum Switch and Ignition Switch).
My original Lock Tumbler is working fine.

I want to pass this on. A Locksmith said that People who have a big glob of Keys hanging off of their Ignition Key shorten the life of the Tumbler.

__________________
84 300D, 82 Volvo 244Gl Diesel

Got towed home.
Yes. Looks like the whole assembly is probably shot.
I'll try Charlie's trick tomorrow and see what happens.

So, is this a dealer item? Didn't see it on PP.

Thanks everyone for your timely help!

It just never ends with these old cars, huh?
D**m! and I was looking forward to showing off the SD to Charlie.
Now he'll have to stare at my wife's Highlander.

Jeff

__________________
1984 300SD 300,000 miles--two tank WVO setup
2.88 diff & 500SEL anti-squat rear end

Jeff, here is the part on pelican.

1984 Mercedes-Benz 300SD Base Sedan - Steering System - Page 3

Charlie

I found it at our Monterey Dealer.

http://www.partswebsite.com/benzpartswholesale/oemparts/mercedes-benz-137/1264620730.html


Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Pelican Parts sells the whole Steering Lock Assembly as do others

My steering Colum Lock thread
http://www.peachparts.com/shopforum/diesel-discussion/333785-steering-colum-lock-ignition-lock-housing-causes-ignition-switch-failure.html

__________________
84 300D, 82 Volvo 244Gl Diesel

Diesel911,
Thanks for the links & info. I'll be ordering the whole assembly.

Here's how this all unfolded:
Went to turn off the car and it wouldn't shut off.
Got under the hood and tried the STOP lever.
The car kept trying to turn back on!
Thought I had a runaway engine. Finally got it to shut down
and heard some clicking down at the starter.
The lock assembly obviously broke in the start position.
Hope I didn't fry the starter.

Haven't read the thread yet, hitting the road now.
Do you have to pull the dash to replace the assembly?

Thanks all,
Jeff

__________________
1984 300SD 300,000 miles--two tank WVO setup
2.88 diff & 500SEL anti-squat rear end

I did not have to pull the Dash on Mine but I was able to remove My Tumbler in the Position that the Steering Colum was unlocked in.

If your Steering Colum is locked and you cant turn it so it unlocks you will need to grind or drill off the Pin that locks it to the Steering Colum.
On mine once the Kick Panel is off that locking Pin can be seen from under the Dash Board.

Some People found it easier if they lowered the Steering Colum. But, I did not do that either.

I think in Your case the Issue is going to be getting the Electrical Connector off of the old Ignition switch.

I cant remember if I took My Steering Colum Lock off with the Electrical Connector still on it or not. I can only remember that I was able to twist it around till I found a spot where I could pull it out.

The same way going back in. It took a lot of twisting and fooling around to find the sweet spot. But, I did not lower the Steering Colum or remove the Instrument Cluster.

Concerning the Vacuum Switch on the Steering Colum Lock. You need to record which Vacuum Line goes in what position as it makes a difference.
The details of grinding or drilling the pin are in the below links.
DIY Repair Links
http://www.peachparts.com/shopforum/forumdisplay.php?f=82
http://www.peachparts.com/Wikka/DoItYourSelf

__________________
84 300D, 82 Volvo 244Gl Diesel